Heating apparatus.



No. 769,318. PATENTEDSBPT. 6, 1904. O. S. MGGURDY- HEATING APPARATUS.

APPLICATION FILED MAR. 25, 1903.

no MODEL. -4 SHEETS-SHBET 1.

@Z JWZ PATENTBD SEPT. 6, 1904.

0. s. McGURDY. HEATING APPARATUS.

APPLIOATIQH FILED MAR. 35. 1903.

4 SHBETS-SHBET 3.

' .m MODEL;

fizvezzivz? PATENTED SEPT. 6, 1904.

No. 769,318. 7 v

I 0. s. MoGURDY.

HEATING APPARATUS.

APPLICATION FILED MAR. 25, 1903.

4 SHEETS-SHEET 4.

no MODEL.

UNITED STATES Patented September 6, 1904.

PATENT OFFI E.

osoAE s. MQoUEpY, E WILKINSBURG, PENNSYLVANIA.

HEATING APPARATUS;

SPECIFICATION forming part of Letters Patent No. 769,318, datedSeptember 6, I904.

Application filed March 25, 1903.

To all whom it may concern:

Be it known that I, OSCAR S. MoCURDY, a citizen of the United States, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Heating Apparatus, of which the following is a specification,

reference being had therein to the accompanying drawings, forming part of this specification, in which h Figure l is a sectional view of a building equipped with my improved automatic heating generators and regulators. Fig. 1 is a sectional detail view showing the supply-conduit surrounding the hot-air pipe. Fig.2 is a vertical sectional View, on an enlargedscale, through one of the heaters. Fig. 3 is a sectional detail view through the burner-valve on the line III III of Fig. 2, showing the valve partl'y' turned to admit gas. Figs. 4: and 5 are detail views showing the connections between the registers and the gas-valves'in'closed and open positions, respectively. Fig. 6' is a crosssectional View through the burner-chamber on 'the line VI VI of Fig. 2. Fig. 7 is a' crosssection above the heating-diaphragm on the line VII VII of Fig. 2;

My invention relates'to heating apparatus for houses, &c.; and it has for its object to provide a heating device for air which will quickly heat alarge volume as it circulates through the apparatus and also a burner and controlling-valve which can be accurately controlled and regulated. Similar subject matter is shown, described, and claimed in my companion application for heating apparatus, filed June 29, 1903, bearing the Serial N 0. 163,559.

Referring now to the drawings, 2 is a casing of sheet-ironor other material of any suitable inclosing form or shape provided witha coldair inlet-pipe 3, leading to its lower portion from any source, as the outside air. The pipe may, however, be omitted and one or more air-openings left inthe casing, as will be read ily understood. In the lower interior portion of the casing is a burner consisting of a plurality of assembled headers 4:, having numerous gas-outlet openings or jets '5, each header being supplied with a gas-pipe 6, connected with avalve-casing 7, while a pilot-light jet 8 Serial No. 149,490. (No model.)

is" also connected with. the valve-casing and adapted to always receive a supply of gas at any position of the valve when the main supply is not out off. 9 is the valve, rotatably mounted in the cas- "ing and having a tapering sealing portion 10 and an open cut-out portion 11. The width of the tapering sealing portion is slightly less than the width of the opening to the pilotlight pipe 8 or may be omitted entirely, while it is sufficiently wide to cover the next adjacent burner-pip'e and gradually wider for each next successive pipe or opening. By this construction when the valve is closed, as shown in Fig. 2, all of the burner-pipes will be shut off, and upon turning it to one side or another gas will be supplied to one or more of the burners, as desired. The valve is preferably tapered in form, having circular solid bearings at each end to insure a tight fit, and is provided with a stem 12, having a lever 13 at the end. A spring 14 surrounds the stem,

bearing against the valve-case and a washer 15, by which the valve is held tightly to its seat. The valve-case 7 is provided with a gassupply pipe 16, which may have a controlling or shut-off valve or cock.

17 is a hood surrounding the burner, having interior bafiie-Walls or obstructions 18, adapted to deflect the course of the burning gas and toabsorb heat therefrom and to radiate it from the exterior'of the hood. Air is supplied to the burner through mixers 19 and openings'in thebase of the hood, through which it may pass upwardly, as indicated.

Above the burner-chamberand extending across the interior area of the case 2 is the combined flue and radiating diaphragm heater into which the products of combustion are discharged from the burner and through the openings in which the partially-heated air passes to become highly heated. This portion of the device is preferably in the form of a circular diaphragm. of cast iron, having a cen tral downwardly-extending flue-opening 20 and entrance-nozzle adapted to, interfit and communicate with the interior of the burnerchamber. The flue-opening 20 is extended on ahorizontal plane in a volute path, asimilarlyarranged conduit being provided therefor IOO composed of inclosing walls 21. These are best shown in cross-section in Fig. 2, wherein the conduit walls taper downwardly toward a' point 22, widening out at or about their middle portion, being closely adjacent to each other and then tapering inwardly toward the top, which is preferably on a common level.

The space between the sections of the conduits is joined by a web 23, strengtheningribs 24 being also located at intervals, while through the webs 23 are air-openings 25.

Slanting openings 26, with surrounding integral walls, are cored through the casting at frequent intervals in opposite directions,

through which openings the air also passes upwardly from below. By this construction a very comparatively large area of interior surface is provided for circulation of gases of combustion, and their progress is considerably baffled and interfered with. The conduit finally terminates in an outlet-opening 27, from which waste gases are taken off to any suitable point of discharge, as a flue 28,

Fig. 1. As the air passes upwardly around the burner-hood and the lower surfaces of the radiator and through openings 25 and 26 it will become highly heated, absorbing the radiated heat, and will pass therefrom directly to the register 29. The heater may be connected directly with the register underneath,

as shown in Fig 2 and at the right of Fig. 1,

or a pipe 30 may lead upwardly to the second or third floor, as shown at the left of said view.

The registers with which the hot-air conductor is connected may be of any well-known or usual kind wherein opening and closing gates 31 are provided, usually swinging on pivot bearings 32 and so connected that all the gates of a single register are opened and closed by foot or hand movement' The rocking or moving element of the register is provided with a single or double lever 33, between which and lever 13 of the valve-stem 12 are connecting rods or chains 34 or other suitable means by which motion will be imparted to the valve from the movement of the radiator. When the radiator is closed, the gas is entirely out off except to the pilot 8, and when the register is open the full flow of gas is thrown on, while at intermediate positions but one or more burners are supplied, and the supply to each burner is also correspondingly regulated. Thus it will be seen that the desired amount of heat can readily be secured by opening or closing the register as much or little as required.

The apparatus is very economical of fuel, and as a separate heater is furnished for each room the temperature may be readily controlled therein independent of other rooms.

The entire device is very small and compact, simple, and cheap in construction, not liable to get out of order, and will commend itself to users of heat-generating apparatus.

It will be understood that other designs of burner-hood, radiating-diaphragm, casing, &c., may be employed and that various changes and modifications may be made by the skilled mechanic; but all such are to be considered as within the scope of the following claims.

What I claim is 1. A hot-air heater consisting of a casing provided with an air-supply opening, a burner, a surrounding hood for the burner, and a radiating-diaphragm having a continuous interior flue communicating with the burner-hood and provided with an outlet-opening, said flue having tapering walls and provided with air circulating ports, substantially as set forth.

2. In a hot-air heater, the combination with a burher-chamber and a surrounding casing; of a transversely arranged radiating diaphragm extending across the area within the casing, having a continuous volute interior flue communicating with the'burner-chamber and terminating in an outlet-opening, with transverse air-ports extending at intervals across the flue, substantially as set forth.

3. In a hot-air heater, the combination with a burner-chamber and a surrounding casing; of a transversely-arranged radiating-diaphragm extending across the area within the casing having a continuous volute interior flue communicating with the burner-chamber and terminating in an outlet-opening, with transverse air-ports extending at intervals across the flue, and a fuel-inlet valve adapted to control the supply of fuel to the burner-chamber, substantially as set forth.

t. In a hot-air heater, the combination with a burner-chamber and a surrounding casing; of a transversely arranged radiating diaphragm extending across the area within the casing having a continuous volute interior flue communicating with the burner-chamber and terminating in an outlet-opening, with transverse air-ports extending at intervals across the flue, and a fuel-inlet valve adapted to control the supply of fuel to the burner-chamber, with means for actuating the valve, substantially as set forth.

5. In a hot-air heater, the combination with a burner-chamber and a surrounding casing; of a transversely arranged radiating diaphragm extending across the area within the casing having a continuous volute interior flue communicating with the burner-chamber and terminating in an outlet-opening, with transverse air-ports extending at intervals across the flue, and a series of air-openings extending transversely between the adjacent volute channels, substantially as set forth.

6. In a hot-air heater, the combination with a burner-chamber and a surrounding casing; of a transversely arranged radiating diaphragm extending across the area within the casing having a continuous volute interior flue I communicating with the burner-chamber and terminating in an outlet-opening, with'transverse air-ports extending at intervals across the flue formed by diagonally-arranged inclosing and separating walls integral with the main fluestructure, substantially as set forth.

7. In a hot-air heater the combination with a burner-chamber and a surrounding casing; of a transversely-arranged diaphragm extending across the area within the casing provided with a continuous interior flue communicating with the burner-chamber and terminating in an outlet-opening, said flue having tapering walls, with air-passages between the adjacent walls, substantially as set forth.

8. In a hot-air heater, the combination with a burner-chamber and a surrounding casing; of a transversely-arranged diaphragm extending across the area within the casing'provided witha continuous interior flue communicating with the burner-chamber and terminating in an outlet-opening, said flue having tapering walls, with air-passages arranged at intervals through the flue,'substantially as set forth.

9. In a hot-air heater, thecombination with a burner-chamber and a surrounding casing; of a'transversely-arranged diaphragm extending across the area Within the casing provided with a continuous interior flue communicating with the burner-chamber and terminating in an outlet-opening, said flue having tapering walls, with airpassages between the adjacent set forth. 10. 'A diaphragm-flue consisting of'a single walls, and through the flue, substantially as 1 35 cast-metal body having a continuous interior volute flue with a central'finlet-opening and a peripheral outlet-opening, with circulating transverse air-passages, substantially as set forth.

11. A diaphragm-flue consisting of a' single cast-metal body'havinga continuous interior volute fluewith a central inlet-opening and 'a peripheral outletopening, said flue having tapering walls, with intervening perforating air-ports, substantially as set forth.

12; A diaphragm-flue consisting of a single cast-metal body having a continuous interior volute flue with a central inlet-opening and a peripheral outlet-opening, said flue having tapering walls with diagon ally-arranged transl verse air-passages arranged at intervals across the flue, substantially as set forth.

presence of two' wit'ne'sses.

' OSCAR s. McOURDY.

I In testimony whereof I aflix my signature in VVitne'ssesz JAMEs M00. MILLER, C; M. CLARKE. 

